James Fung, Ariel Garten, and Steve Mann (~2003) have created
a wide variety of underwater biophone systems that use physiological
signals to control different musical variables in an intericate way,
as well as to actually generate sounds,
including underwater ECG and EEG concerts

The electrocardiophone is a quintephone in the sense that it creates
sound from the "5th classical element" (i.e. from beyond the world of matter).

Related concepts

In addition to sound-production, regenerative brainwave musical performances use brainwave interfaces to modify or manipulate or play along with sounds of other instruments in a live performance context.